@incollection{weko_44915_1, author = "黒子,正人", title = "第4章 貿易統計データベースにおける国コードの利用", booktitle = "商品分類の改訂に伴う貿易統計の変換", publisher = "日本貿易振興会アジア経済研究所/Institute of Developing Economies (IDE-JETRO) ", year = "2001", volume = "", number = "", pages = "75--88" }